Contact protection measures – WIKA 851 User Manual
Page 17
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WIKA operating instructions magnetic snap-action contact model 821
17
GB
2003325.03 03/2011 GB/D/F/E
Contact
Contact
Switching v
oltage
Switching current
max. current
max. voltage
limit curve
allowed working
range
V
max
A
max
A
V
A
min
V
min
9. Contact protection measures
9.3. Capacitive load
With capacitive loads elevated switch-on currents arise. These can be
reduced by series-connecting resistors in the supply line.
Examples:
Contact protec-
tion measure with
current-limiting
resistor
Contact curve
The hatched area of the contact curve shows the permissible electrical
values for the respective contact.
Accordingly the voltage and/or current to be switched must not exceed
the respective maximum values.
The power to be switched may only lie below the limit curve.
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